For B.G. single track, the section of the tunnel must have a width

1.

For B.G. single track, the section of the tunnel must have a width

[A].	4.2 m to 4.5 m
[B].	4.5 m to 4.8 m
[C].	4.9 m to 5.5 m
[D].	5.5 m to 5.8 m

Answer: Option C

Explanation:

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